Alright, let's solve this math problem step by step. First, we have the number 72. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 143. So, we're going to take the number 72 and add it to itself 143 times.
Step 1: 0 + 72 = 72
Step 2: 72 + 72 = 144
Step 3: 144 + 72 = 216
Step 4: 216 + 72 = 288
Step 5: 288 + 72 = 360
Step 6: 360 + 72 = 432
Step 7: 432 + 72 = 504
Step 8: 504 + 72 = 576
Step 9: 576 + 72 = 648
Step 10: 648 + 72 = 720
Step 11: 720 + 72 = 792
Step 12: 792 + 72 = 864
Step 13: 864 + 72 = 936
Step 14: 936 + 72 = 1008
Step 15: 1008 + 72 = 1080
Step 16: 1080 + 72 = 1152
Step 17: 1152 + 72 = 1224
Step 18: 1224 + 72 = 1296
Step 19: 1296 + 72 = 1368
Step 20: 1368 + 72 = 1440
Step 21: 1440 + 72 = 1512
Step 22: 1512 + 72 = 1584
Step 23: 1584 + 72 = 1656
Step 24: 1656 + 72 = 1728
Step 25: 1728 + 72 = 1800
Step 26: 1800 + 72 = 1872
Step 27: 1872 + 72 = 1944
Step 28: 1944 + 72 = 2016
Step 29: 2016 + 72 = 2088
Step 30: 2088 + 72 = 2160
Step 31: 2160 + 72 = 2232
Step 32: 2232 + 72 = 2304
Step 33: 2304 + 72 = 2376
Step 34: 2376 + 72 = 2448
Step 35: 2448 + 72 = 2520
Step 36: 2520 + 72 = 2592
Step 37: 2592 + 72 = 2664
Step 38: 2664 + 72 = 2736
Step 39: 2736 + 72 = 2808
Step 40: 2808 + 72 = 2880
Step 41: 2880 + 72 = 2952
Step 42: 2952 + 72 = 3024
Step 43: 3024 + 72 = 3096
Step 44: 3096 + 72 = 3168
Step 45: 3168 + 72 = 3240
Step 46: 3240 + 72 = 3312
Step 47: 3312 + 72 = 3384
Step 48: 3384 + 72 = 3456
Step 49: 3456 + 72 = 3528
Step 50: 3528 + 72 = 3600
Step 51: 3600 + 72 = 3672
Step 52: 3672 + 72 = 3744
Step 53: 3744 + 72 = 3816
Step 54: 3816 + 72 = 3888
Step 55: 3888 + 72 = 3960
Step 56: 3960 + 72 = 4032
Step 57: 4032 + 72 = 4104
Step 58: 4104 + 72 = 4176
Step 59: 4176 + 72 = 4248
Step 60: 4248 + 72 = 4320
Step 61: 4320 + 72 = 4392
Step 62: 4392 + 72 = 4464
Step 63: 4464 + 72 = 4536
Step 64: 4536 + 72 = 4608
Step 65: 4608 + 72 = 4680
Step 66: 4680 + 72 = 4752
Step 67: 4752 + 72 = 4824
Step 68: 4824 + 72 = 4896
Step 69: 4896 + 72 = 4968
Step 70: 4968 + 72 = 5040
Step 71: 5040 + 72 = 5112
Step 72: 5112 + 72 = 5184
Step 73: 5184 + 72 = 5256
Step 74: 5256 + 72 = 5328
Step 75: 5328 + 72 = 5400
Step 76: 5400 + 72 = 5472
Step 77: 5472 + 72 = 5544
Step 78: 5544 + 72 = 5616
Step 79: 5616 + 72 = 5688
Step 80: 5688 + 72 = 5760
Step 81: 5760 + 72 = 5832
Step 82: 5832 + 72 = 5904
Step 83: 5904 + 72 = 5976
Step 84: 5976 + 72 = 6048
Step 85: 6048 + 72 = 6120
Step 86: 6120 + 72 = 6192
Step 87: 6192 + 72 = 6264
Step 88: 6264 + 72 = 6336
Step 89: 6336 + 72 = 6408
Step 90: 6408 + 72 = 6480
Step 91: 6480 + 72 = 6552
Step 92: 6552 + 72 = 6624
Step 93: 6624 + 72 = 6696
Step 94: 6696 + 72 = 6768
Step 95: 6768 + 72 = 6840
Step 96: 6840 + 72 = 6912
Step 97: 6912 + 72 = 6984
Step 98: 6984 + 72 = 7056
Step 99: 7056 + 72 = 7128
Step 100: 7128 + 72 = 7200
Step 101: 7200 + 72 = 7272
Step 102: 7272 + 72 = 7344
Step 103: 7344 + 72 = 7416
Step 104: 7416 + 72 = 7488
Step 105: 7488 + 72 = 7560
Step 106: 7560 + 72 = 7632
Step 107: 7632 + 72 = 7704
Step 108: 7704 + 72 = 7776
Step 109: 7776 + 72 = 7848
Step 110: 7848 + 72 = 7920
Step 111: 7920 + 72 = 7992
Step 112: 7992 + 72 = 8064
Step 113: 8064 + 72 = 8136
Step 114: 8136 + 72 = 8208
Step 115: 8208 + 72 = 8280
Step 116: 8280 + 72 = 8352
Step 117: 8352 + 72 = 8424
Step 118: 8424 + 72 = 8496
Step 119: 8496 + 72 = 8568
Step 120: 8568 + 72 = 8640
Step 121: 8640 + 72 = 8712
Step 122: 8712 + 72 = 8784
Step 123: 8784 + 72 = 8856
Step 124: 8856 + 72 = 8928
Step 125: 8928 + 72 = 9000
Step 126: 9000 + 72 = 9072
Step 127: 9072 + 72 = 9144
Step 128: 9144 + 72 = 9216
Step 129: 9216 + 72 = 9288
Step 130: 9288 + 72 = 9360
Step 131: 9360 + 72 = 9432
Step 132: 9432 + 72 = 9504
Step 133: 9504 + 72 = 9576
Step 134: 9576 + 72 = 9648
Step 135: 9648 + 72 = 9720
Step 136: 9720 + 72 = 9792
Step 137: 9792 + 72 = 9864
Step 138: 9864 + 72 = 9936
Step 139: 9936 + 72 = 10008
Step 140: 10008 + 72 = 10080
Step 141: 10080 + 72 = 10152
Step 142: 10152 + 72 = 10224
Step 143: 10224 + 72 = 10296

So, 72*143 = 10296